Here's what other sites are saying:
Designed for rescue work, this 1/2-in. modified-D steel carabiner has a strength rating of 65kN (that's over 14,000 pound-force units).. . . Locking gate with 22 mm gate opening. Length: 113.3 mm (4.46 in.). Width: 68.6 mm (2.7 in.).
Same "D" shape as the 7/16" model, but with bigger material for increased strength. Same great handling and use characteristics but with a strength rating of 65 kN (that's over 14,000 lbs.!).
- Altrec Outdoors
*Manufactured by Omega Pacific with certified heat-treated 1/2" alloy-steel to ensure high strength and dependability. *Exceeds NFPA/ANSI/OSHA strength requirements *Gate Opening: 23mm *Material: 1/2" Steel *Strength: 65kN *Weight: 263 gm
- Vargo Outdoors
Trust your weight to the heat-treated, 1/2-inch alloy-steel strength of Omega Pacific's Modified 1/2-inch Steel Screw-Lok D carabiner that exceeds NFPA strength requirements. Handle ropes easily - the D shape, ample gate opening, and screw lock keep operation streamlined.
- Mountain Gear
Omega Pacific 1/2" Modified D NFPA Quik-Lok
Omega Pacific 1/2" Modified D Screw-Lok
$25 - $27
Omega Pacific 7/16" Modified D Screw-Lok
Omega Pacific 1/2" Large D NFPA Screw-Lok
$31 - $34
Omega Pacific 1/2" Standard D NFPA Screw-Lok
Omega Pacific G-First NFPA Screw-Lok Carabiner
Omega Pacific 7/16" Modified D Quik-Lok
$34 - $39
DMM Revolver Screwgate